?Desperately是一個副詞，表示“拼命地”、“絕望地”、“極度地”等含義。它可以用來形容某人或某事極其迫切、焦急、無助的狀態。

用法：

1. 作為副詞，desperately通常放在動詞之后，用來強調動作的緊迫性和不得已性。：He desperately tried to find a way out.（他拼命地試圖找到一條出路。）

2. 也可以放在形容詞之前，用來強調程度的深刻和強烈。：She was desperately sad when she heard the news.（當她聽到那個消息時，她極度悲傷。）

3. 另外，desperately也可以用作介詞，在這種情況下，它的意思是“非常需要”、“極其渴望”。：I am desperately in need of money.（我非常需要錢。）

例句參考：

1. The children were desperately calling for help when their boat capsized in the stormy sea.

（當他們的小船在洶涌的大海中翻了時，孩子們絕望地呼救。）

2. She searched desperately for her lost necklace, which had great sentimental value to her.

（她拼命尋找丟失的項鏈，因為它對她來說有著很大的情感價值。）

3. The firefighters worked desperately to put out the fire, but the building was already engulfed in flames.

（消防員們拼命地滅火，但建筑物已經被大火吞噬。）

4. The refugees were desperately fleeing from their war-torn country, seeking safety and a better life.

（難民們絕望地逃離他們飽受戰爭蹂躪的，尋求安全和更好的生活。）

5. He was desperately in love with her, but she didn't even notice him.

（他非常愛她，但她甚至都沒有注意到他。）